Pneumatic cleansing apparatus.



AJE. MOORHEAD. PNEUMATIC CLEANSING APPARATUS.

APPLICATION FILED NOV. 24, 1911.

Patented 0@t. 29,1912:

5 SHEETS-JSHEET 1.

A. E. MOORHEAD. 'PNEUMATIU CLEANSING APPARATUS.

APPLICATION FILED nov. 24, 1911.

5 SHEETS-SHEET 2. U

25 Z 1 &

Patented 0ct.29,1912.

A. E. MOORHEAD.

PNEUMATIC CLEANSING APPARATUS. APPLICATION FILED NOV. 24, 1911.

1,043,025. Patented Oct. 29, 1912.

5 SHEETS SHEET 3 Cfifiaaajv fierzivl 1% 1 JZZbeUZZT/YWr/zew we 47mm mm 171%;

A. E. MOORHEADH PNEUMATIC CLEANSING APPARATUS.

APPLIUATION FILED NOV 24, 1911.

Patented. Oct. 29, 1.912.

5 SHEETSSHEET 4 MOORHEAD.

PNEUMATIC CLEANSING APPARATUS APPLIGATION TILED NOV. 24,1911.

Patented Oct. 29, 1912.

5 SHEETS-SHEET 5.

. air, or by the use of both compressed air.

UNITED strA'rEs Plgnntr OFFICE.

ALBERT E. MOORHEAD, OF CHICAGO, ILLINOIS, ASSIGNQB TO AMERICAN ROTARY VALVE COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

Specification of Letters Patent.

Original application filed October 28, 1908, Serial No. 458,945. Divided and this application file' d- November To all whom at my concem:

Be it known that I, Amnn'r E. MoonrrnAp,

a citizen of the United States, and a res1-. dent of the city of Chicago, county of Cook,

and State of Illinois, have invented certain new and useful Improvements in Pneumatic Cleansing Apparatus; and I do hereby declare that the following is a full, clear, and

. cleansing apparatus and is shown in the accompanying drawings and herein described in connection with an apparatus embracing means adapted for use in cleansing, either by suction or by the force of compressed and suction at the same time; as may be desired, means whereby accumulated dust or refuse may be mixed with and deposited in a body of water and discharged when necessary in a convenient manner and without .the

necessity of opening tanks or manual removal; means by which the water used for scrubbing and conducted from the scrubbing appliances to cleansing apparatus can be automatically discharged therefrom into a sewer; means y Which one or more cleans= 'ing appliances and one or more scrubbing appliances using water can be operated simultaneously; means by which scrubbing appliances may be used not only with water supplied from the city mains, but also in u circulatin system with disinfectant liquid, so that, when said disinfectant has been used, it may be returned to the apparatus and used over again, and, furthermore, such operation can be carried on simultaneously with the use of pneumatic carpet sweepers or pneumatic cleansing appliances; means embracing a receptacle which can be used not only as a receptacle for dust, but also as a compressed air receiver when using air under pressure, together with other features and details of construction in such apparatus, as'will be hereinafter pointed out.

In the accompanying drawings :-Figure 1 is a side elevation of the apparatus; F ig. 2 is a plan view thereof; Fig. 3 is a horizontal sect-ion on an enlarged scale of the controlling valve of the air pump; Fig. l is a vertical section thereof; ig. 5 is a trans- Serial No. 682,088.

verse vertical section on the line 5-5 of Fig. 3; Fig. 6 is a transverse vertical section on the line 66 of Fig. 3; Fig. 7 is a transverse vertical section on the line 77 of Fig. 3; Fig. 8 is a perspective view oft-he valve, detached from other parts, the packmg bars and rings bein omitted; Fig. 9 is a detail perspective view of one of the packin bars; Fig. 10 is a detail view 0 one of the packing-rings; ig. 11 1s a longitudinal vertical section of the reective Bill ceiver; Fig. 12 is a transverse section ona the line 12-12 of Fig. 11; Fig. 13 is a transverse section on the line 13--13 of Fig. 11; Fig. 14 is a perspective view of the casing for the combined agitators and pro pellers.

Referring to the drawing, '1 indicates a rectangular hollow base, which forms both a receiver for containing a body of water and the dust and sweepings collected by pneumatic sweeping devices used in the system, and also a support for the mechanisms for producing and controlling the exhaust or compression. Said mechanisms may be actuated eithermby electricity, steam or otherwise, and are herein shown as actuated by the former. Referring to such actu ating devices, as shown 1n the drawings, 2

indicates an electric motor mounted upon one end of the hollow base 1.

Upon the shaft of the motor is a pulley 3 around which passes a belt 4, w ich also passes around a large pulley 5 on a transverse shaft 6 carrying a fly-wheel 7. The crank 8 of said shaft actuates a fpiston 9 reciprocating in the cylinder 10 0 an air pumppump may be used, as desired, either as an air compressor to deliver air to the receiver, or as an air-exhaust pump to exhaust the air from said receiver, dependently upon the adjustment of the controlling valve; of the air pump v Formed integral with the casing of the working cylinder is a valve 11 (Figs. 3 and 4) havlng a cylindrical valve chamber containing a cylindric, rotary valve 12, these parts constituting a valve for controlling Said the entrance of air to and its exit from the ends of the pump cylinder. The details of construction in said controlling valve con-- as follows: Said valve casing is described only so far as is necessary to an understanding of the'present invention.

Now referring to the features of construction illustrated in said valve and associated parts, the same embrace features provided at its central partwith an annular chamber. 13, connected by a conduit 14 ends of the pump cylinder.

consists of a cylindrical shell provided ex-. four annular grooves 19, havto the central annular chamber 13. and on' its ends with cylindric surfaces 23 with the interior of the receiver 1, and at its ends is connected through ports 17, 18, with the Said valve 12 teriorly with ing therein packing rings 20,. and having a central, cylindric surface 21 arranged to act in connection with a port 22 leading to act in connection with the cylindric ports 17, 18. The valve 12 is also provided with two longitudinal grooves 25 in which are seated two longitudinal bars 24, arranged diametrically opposite to each other, which bars and the packing rings 20 are formed with notches 25, 25, at their intersecting points, so that the outer surfaces of the packingrings are flush with the outer surfaces of the bars. The valve casing is formed with annular water jackets 26, and also with oil passages 27, terminating over the packing rings 20. Connected withone end of the valve casing by an elbow 15 is a' pipe 16 adapted to form either an inlet or exhaust passage, according to whether the pump is acting to compress air into or exhaust air from,'the receiver, said pipe 16 being in communication with the interior I of the valve casing through: the adjacent open end thereof. Upon the end of said valve casing opposite that to which the pipe 16 is attached is secured a head 28 through which passes a stem 29, which is secured to an end wall 30 of the valve, which closes that end of the valve. Across the interior of said valve extends diametrically a partitien or web 31, the terminal portions of 'whiclrlie. in the same plane but the intermediate portion of which is twisted through half a turn. Thus, when the valve is' in the angular position'shown in Figs. 3 and 4 of the drawings, the web'are vertical, but the web at the central portion of the-valve is horizontal and is twisted from said direction outward, from a horizontal to a vertical position. The other end of the valve, orthat adjacent to the inlet or outlet pipe 16, is closed on one side of the web 31 by an end wall 30, and is provided with an opening 32 at the other side of the web.

Said, opening is always in communication with the pipe 16. Adjacent to the closed end 30 of the valve there are formed in the side 'wall thereof, on opposite sides of the web and extending through the cyadapted the terminal portions of central portion, in each,

lindrical surface 23, two ports 33, 34 and, in like manner, near the partly open end of the valve there are formed, on opposite sides of the web and extending through the cylindric surface 23, two ports 35, 36. In its central part, on which is formed the cylindric surface 21, the valve is provided in its side wall with what is practically a single port 37, although the same is divided by a narrow bridge 38 on which is seated the bar 24 on that side of the valve. Said port 37 is always open to the central annular chamber 13, which latter is connected to the receiver by means of the passage 14. When the valve is in the position shown in Figs. 3 and 4, the cylinder port 17 is connected through the-annular chamber with the receiver, while the cylinder port 18 is connected through the passage 32 with exhaust.

By means which will be presently described, the stem of. the valve makes a half turn with each half'reciprocation of the piston, and the effect is that when, for instance, the piston, moving from left to right, and drawing in air from the receiver, reaches its extreme right-hand position,the valvewill have been turned through onehalf a revolution, so that the outer end of the cylinder is now connected with exhaust, and the inner end ofthe cylinder is con nected with the receiver. Then, upon the return of the piston, air is drawn from the receiver to theinner end of the cylinder and is expelled from the outer end to exhaust, and so on, thus forming a doubleacting suction pump for drawing air from the receiver and-expelling it through the pipe 16, which then acts as an exhaust pipe.

The valve stem is given a rotary move- -ment in unison with the reciprocating movement of the plunger by means of a mitergear 4.1 upon the transverseshaft 6, meshing with a miter-gear 42 upon a longitudinal shaft 43. Said shaft 43 is connected with the valve stem 29 through the interposition of a clutch 44 which permits the valve to be reversed to change the operation of the .pump from an exhaust pump to a compressor. For this purpose, the clutch 44. consists of two parts that are adapted to be interlocked with each other in two diametrically reversed positions of one of them, and one of which is movable in a direction endwise of the shaft 43. As shown, said clutch consists of two clutch members 44:, and 44". The clutch member 44 is secured to the outer end of the valve stem 29 and is provided on its end face with a transverse rib adapted to engage a transverse groove in the clutch member 44". The clutch member 44 is mounted and adapted to slide endwise, without rotation, on the shaft 43, so that it may be movedpn the shaft toward and'from the clutch member 44. Ahead structure, and has aforked en the arms When it is desired to reverse the operation of the valve, the clutch member A is actuated to release the shaft 43 from the valve stem 28 and the latter is turned through half a revolution by means of'a hand-wheel clutch are again interlocked, some to connect-the valve stem with the shaft 43. Thevalve having thus been advanced through one-half revolution, acts in the opposite manner to that already described, that is 'to say, so that each end of the cylinder is in communication with the receiver at the time of which engage an annular groovtaiu the clutch member 44*, ina familiar manner.

.45 secured to said stem, and the parts of the that the piston is moving'toward said end,

and the other end of the cylinder is then connected with exhaust, so that the cylinder now acts as a'compression pump. 5

The passage from the valve into the pipe 16 is adapted to be closed by means of a valve disk 50 carried by a stem 51 which slides in a fixed guide-sleeve 51 on the elbow 40. Upon the outer end of said stem 51 is secured a cylindrical piston'52 which slides in a cylinder 53 formed on the elbow 15. The inner end of said cylinder is closed by a head on which is formed the guide-sleeve 51. in closed position by means of a helical spring 54 which acts to press it toward its seat surrounding the open end of the valve extends longitudinallyof the receiver,

casing. A disk 55 of felt surrounds the stem 51 and is interposed between the outer side of the valve disk 50 and the inner end of the guide-sleeve 51 to cushion the impact of the valve against the rapid end of said guide-sleeve. In'order to check the too rapidmotion of the valve, there is formed in the side of the cylinder 52 a vent 56 which is adapted toallow the air toescape Said valve disk 50 1-5 normally held slowly from or to pass slowly into the cyl inder, and, for the purpose of regulating therate of How at which it can so pass, said vent is adjustably closed by means of a pivoted door 57. It is necessary to limit the amount of air which is drawn into the pump whenusing it as a compressor, for if the full volume of air were drawn into the cylinder, the power required to compress the entire volume of air so admitted might be too great. In order to so limit theiam-ount of air thus admitted, this valve is so arranged that. its closing movement will-be arrested when the valve disk is at a short distance from its seat, and for this purpose set nuts are applied to the valve stem in contact with the outer face of the piston 52. When the pump is used as a compressor, the air being then drawn into the pump cylinder through the pipe 16, the valve disk 50 will:

assume a position as close to the seat as permitted by said set nuts.

Now referring to the features ofconstruc- 'tion in the apparatusyby which dus-t and refuse collected-by. vacuum operated 'cl'e'ansmg devices and returned- .tothe apparatus may be mixed with'and. deposited in a body of water contained in the- -rece iver,-- these parts are made as follows: The inlet end -of the receiver is provided with an inlet passage or opening, which is surrounded by a flange 60, to' which is bolted a flange 61 on an elbow 62. Said elbow is provided at its outer-end with a flange 63 to which is securcd'a vslvecasing 64 connecting the elbow ceiver' from the various parts of the building on whichthe pneumatic cleansing devices are to be used. Within the receiverl, adjacent to its inlet end, is located a cylindr1c shell or casing 69, which is arranged horizontally and transversely of the: receiver, open at its ends and perforated. or apertur'ed initslower part, as indicated at 80. Said casing that the casin' will be heard .or wholly submerged, an therefore-filly or nearly filled with water. To the lower flange 61 of will be soarranged with respect to the water level m the receiwan,

.with an inlet pipe 65 which leads to the rethe elbow. 62 is bolted a flange 66 formed upon a centrall arranged tubular member" 6 v attached to. t 0 central art ofthe casing 69, and extending at'nf t a ice to the a same. 0 p located near the inner surfaces of the sides- The 'open ends saidsell 69 are of the receiver, while the central member 67- and the flange 66 on its outer end is secured to the flange 61 within the inlet openin in the end of the receiver. 'In' said cylin ric casing 69 arelocated aplurality of rotative agitator blades 70-carr1ed by a transverse, horizontal shaft 71, which extends centrally through said casing and rotates in bearings '72 mounted upon the sidesof-the receiver.

Said shaft is provided outsid'e 'of the re ceiver with a pulley -73 drivcnby 'a belt 74 that is trained around a pulle 75 upon'the shaft of the electric motor.

enlnoperaa tion, the agitator blades pass through or op v 1 15 obliquely, with the bla es of, the alter same, the blades oiadjacentisets will act in opposite directions, this construction being used to increase the agitation of the water I 1 resulting from the rotation of the blades.

,As the air is drawnintothe receiver'from the pipe 65, it enters-the central part of the casing 69, and passing in both directions from its center, toward its open ends, passes from the latter into theairf space in "the upper part oil the receiver. The effect of the noaaoes agitator blades, when rotated, isto contin ually agitate the water, and, bring it into intimate contactwith the air drawn in from the suction pipe in the form of drops or spray. The air is thereby thoroughly cleansed, of dust and solid refuse, which latter is mixed with and deposited in the 'water and accumulates'in the bottom of the receiver.

It is necessaiy'from time to time to dis-.

charge from the receiver the water therein when the 1a-tter becomes unduly ladened with dust and reIuse separated from the air.

To eitect this, water from a suitabl esource of supply is admitted into a pipe 59 extending horizontally of the receiver, within the same. Said pipe is shown as extending through the end wall of the receiven at the outlet end of the latter, and as supported by a bracket. 76 from thetop of the receiver.

To said pipe 59 are connected depending flexible tubes '(7 of rubber or the like and to the lower end of each of said tubes is connected a rotary sprinkler 7 8, Each sprinfee kler '78 consists of, a plurality of hollow' arms, attached to'and radiating from a hollow hub, mounted to rotate on a terminal metal piece on the lower end of the flexible tube, said arms having.:laterally directed discharge or jet openings 79. The jets of Water issuing from said jet openings op erate by reaction jto produce rotative motion in the arms of the sprinklers, in a well known manner. Said sprinklers are located near the bottom of the receiver, so that they are immersed inthe body of water therein contained. When water under pressure is admitted to said pipe 59, it emerges with considerable force through the jet openings '79 of the sprinklers, thereby not only producing rotary motion in the same, but'acting to thoroughly agitate thewater and stir up the mud or deposits in the bottom of the receiver." This agitation of the water and mud is increased by the shaking motion im parted 'to the flexible hos itself from the back pressure of the jets of water issuing from'the jet openings T9. The pipe Sr.) is also provided with depending branchpim-s 81, the lower ends of which are provided with jet openings or nozzles directed -lown Worth) and ttm'ardthe discharge end of the container. ".l he'receiver is provided at such discharge end with a discharge outlet. Olx

located at the level of theboltom wall of the saidreceiver for the discharge of the mud or the muddy water therefrom. The bottom wall of the receiver is preferably sloped or' inclined toward said outlet, in order to facilitate the drainage-of water from the receiver. A discharge 'iipe 94 will he connected with said outlet 9: 9", and will lead to a sewer or other place of dis;- charge; q

The apparatus is designedlo be used in commotion with vacuum operated scrubbing appliances of that kind inwhich water used for cleansing is drawn from a door which is being scrubbed through the action of the vacuum created in the pipe 65, when the air pump is acting as an exhaust pump to pr0- duce a partial vacuum in the receiver. in such case the continued operations of scrubhing anddrawing in the water will result in the accumulation of water in the remover, and, if such accumulation be allowed to unduly continue, the water will fill the receiver and will rise into the pump cylinder. To avoid the possibility of this taking place,

embracing .a pump-cylinder 82 attached to the side wall of thevreceiver and communi= cating 'with 'the interior of the same by a conduit. 83 having :1 depending branch 8-! and an upwardly extending branch 85; the latter having an opening at. its'upper end adapted to be closed by a valve 86. Said "there is provided a liquid delivery pump valve is operated by a handle 87 attached to the upper end of a valve stem that is attached to the valve and extends upwardly through the top wall. of the receiver. in said pump cylinder reciprocates a plunger SRconnccted by a rod 89 with a crank-pin 90 carried. by the transverse shaft 6. The discharge opening of the pump cylinder connected by a pipe 91 with the casing of a check-valve 92 and the latter is connected with a pipe 93 with which-is connected two branch pipes 96 and or; The pipe 94"lcads to the waste pipe 4" and is provided with a hand-operated valve 94. The branch 96 is provided with a hand-operated valve 95 and is connected with distributing pipes that lead to various pointsin thelmilding. in the ordinary. operation of the apparatus, ex cept as hereinafter described, the valve 86 is kept open with the eliect that, so long as the level of the water in the receiver remains below the top of the conduit 89, no action the level of the water in the receiver in by the accuu-iulation due toiscrubbing. al re the top of the upwardly extendingbranch .85 or the conduit 83, the plunger 88 pumps out a part. of the water and discln'rr g rs it through the 'llt('l(V:1l\'(B 92 and into the sewer i l It is sometimes desirable to distribute a disinfectant liquid within a lmilding. For

this purpose the reservoir is filled through the pipe 59- with the disinfectant liquid to a sullicient level as is indicaledin Fig. 12. The valve St] is then closod,'the valve- Srl is closcdnnd the valve 9:") in the pipe 96 is opened. \Vhcu the pump 89 is put into operation. the disinfecting liquid is drawn from the receiver through the open depending branch 9+ of the conduit 82% and is forced through the pipe 96, from which it will he carried through the distributing pipes to various points in the building where it is i its" desired to use. the same; lSuchdisinlecting liquid; after being used on floors and the like, may. be drawnup or' collected by the use of suction devicesjwhichare placed in scommunication with pipes in the building, e that are connected with the return pipe 65.

The disinfecting liquid returned'by the pipe 65 to the receiver. may be again-pumped from the same and used over and over again,

main. Said pipe-9'9is controlled by a valve 100. A pipe 101,- controlled by a valve 102 connects the pipe 96 with'the 1pipe e '25 After distributing a disin ctant liquid,

or plain water from the pipe 99 through the pipe-'96 andthe distributing pipes connected therewith, it will be vnecessary to thoroughlv dry the pipes' conta ining the liquid,- .30 in order-that if,'on the next operation, compressed air-be delivered through thesaine pipes, nowater may be thereby discharged upon the floors, furniture or other objects. To effect this result,jeach time that the pipe 96 has been used for distributing disi'nfec-' tantli'quid or'water, the valves 98 and 100 are closed and the'valve102"is opened and f the air-pump put in operationa'sv a suction pnm the effect being to draw am back- 40 war through thepipe 96, and pipe 101 the receiver, thus thoroughly drying said pipe 96 and the distributing pipes by means of the air drawn backwardly, through the same; 46

which compressed :air will be delivered when the same is desired'for use in cleanin of vacuum'devices. For using'compres'sed '50 'air,t he,water will be discharged from the 'receiver and the valve of the air pump reversed, so'that said pump'will operate 'to deliver air to said rece ver. The air compressed in the receiver will then be allowed 551 to ass from the same through the pipes 1 an -101 to the pipe 96 and delivered from the same through the distributing pipes to desired points; in the building. The-valve 95in said pipe 96 at this time will be closed; mand'the valve 102 open. When water 1mm 7 the-city mains is to be used jor cleansing, the,

valves 95'and-102 will be-closed, a n'd the valve 100. in the water supply pipe 99, p opened, thusadmitting water instead ot 55' compressed air to the pipe 97 for distribu.-

leadiiig from a source" The pipe 96 constitutes the pipe through- J such objects as cannot 'well be'cleaned by t 0 'use' Iparatus. through tion to, the difierent parts of the building.

At this time-the air pumma .be operated as an exhaust pump,'so t at t e water used "may sucked up; by vacuum operated cleansing onscrubbing devices'and drawn" through the return backinto the receiver pipe 65.

.lff'air be supplied to the pipe 96 from the pipjc 9 7, receiving itssupply' of air under pressure'from a separate air-pump or some other source ofjsupply,'the compressed air will bedistributed-tothe various parts of the building through the distributing pipes connected with said pipe 96, and the dust d slodged fronr the objects being cleansed by theaction of the compressed air, may

be drawn u 'yorj collected byvacuum operating cleansing devices, connected with the return pipe (i5, and returned thereto to the receptacle (off 1 the apparatus; the air pump in this operation bei'ng operated to exhaust the'aiafrom the receiver, and the valves 'and ,102 being closed.

- By the employment of the several features .90

and combinations of parts hereinhefore described, I am enabled to. obtain results and advantages as follows: By reason ofthe employmentof van air-pump provided with a' valve which is reversible so that-the pump is convertible into either an exhaust'pump in connection with cleaning devices operat-' ing either-by suctionor by air-pressure... By the use of the air pumpact-ing to-exhau'st air from the receiver, in connection'with a or a compressor, the apparatus may he used I100 pipe furnishing air under pressure from a'- separate source of air supply, air under pressure mayl be supplied for the :purpose of dislodging' dust from articles .by the action of an air blast while at the same time, air

maybe exhausted fromr-pipes-with which;' .are connectedcleaning devices that are operatod to deliver to the receiving chamber the dust so dislodged. v p

By the use of the features of construction described'in'the device for separating the dust from the air, the dust is positively and certainly separated ,from the air and mixed w with and deposited in the body of water in' automatically acting liquid puinpgind water;

the receiver,-'and by the employment of the jet appliances, surplus water is disciiarged from ,the receiver the mud or accumulated' deposits.in the receiver discharged I from the latter when-necessary. By the connection of a water supply pipe with the pipeleadingto'theplaces to be cleaned, in con'. nection withthe receiver and air-pump when operating as an exhaust pump, water used for scrubbing mayl be returned to the' ape return pipe connected with the receiver, so that vacuum operated.

cleaning devices and scrubbing appliances can be used simultaneously. By the use of the liquid pump and its delivery pipe, in

connection with the air pump acting as an exhaust pumpfa disinfecting liquid can he delivered 'to various points in a: building; and such liquid returned through the return pipe to the receiver. By the employment,

in connection with the receiver of a liquid pump adapted to withdraw water from the receiver after a certain quantity has been delivered thereto. and providing said pump with. two valved discharge pipes, one leading to a waste pipe and the other to the distribut-ing pipes in the building, the same pump may, he used. for removing an excess of Water from the receiver and lor delivering a disinfecting fluid from the same to the distributing pipe. Moreover, the em ployment of a receiver adapted to contain a body of water, together with an air pump pression, and a liquid-pump' connected for removing water from the receiver, constitute the subject of my application, Serial No. 459,945, filed October 28, 1908,01? which this application constitutrs a division.

The features of construction in the airpump illustrated form the subject-matter of the separate application Serial No. 693,293, hercinheiore referred to, which also constitutes a division of said application, Serial Number 459,945.

The features illustrated in the accompanying drawings and herein described, whereby accumulated dust or refuse may be mixed with and deposited in the body of water contained in the receiver of the apparatus, and said water and the dust or' refuse may be removed or discharged from said receiver,

constitutes the subject of a separate application, Serial Number 640,967, filed by me July 28th, 1911. as another division of said application, Serial Number 4539,9415.

Tt is to be understood that an apparatus embodying the general. features of construction hcreinbetore set forth may he variously modified s thout departure from my inven tion, and t i... not, therefore. desire to be limited to the specific features of construction illustrated in the accompa ying drawings. except so far as the 0 may 1* specnically claimed in the appended claii I claim as my inve in) v 1. In a pneumatic cle .7; apparatus, the combination of a receiver, an exi'zaust pump connected with the receiver, an air return pipe connected with the inlet pas sage-of the receiver, a delivery pipe. and a pipe supplying compressed air from a se arate source or supply connected with said delivery pipe and provided with a valve. whereby the apparatus is adapted for operating both air pressure and vacuum operated cleansing appliances.

2. In a pneumatic cleansing :mpuratus, the combination of a receiver, a convertible air exhaust and compression pump con nected by a passage with the receiver, return and air delivery pipes connected with the receiver and a pipe supplying air under pressure from a separate source of air snpply connected with the air delivery pipe, and valves controlling said pipes, whereby the apparatus may be employed to operate either separately or simultaneously, vacuum and air-pressure cleansing devices.

3Q In a pneumatic cleansing" apparatus, the combination of a receiver, an exhaustpump connected with the receiver, an air return pipe connected with the inlet. passage of the receiver, a delivery pipe, and a pipe supplying water under pressure. connected with said delivery pipe, whereby the up paratus is adapted for operating vacuum operated cleansing appliances, or water may be supplied for scrubbing.

4. In a pneumatic cleansing apparatus, the combination of a receiver. a convertible air exhaust and. compression pump, con-- nected by a passage with the receiver, dclivery and return pipes connected with the receiver, a pipe supplying water to said dclivery pipe, and valves controlling said pipes, whereby the apparatus may be used for operating either pressure operating cleansing appliances or vacuum operating; cleansing appliances, or water-may he supplied for scrubbing.

In a pneumatic cleansing apparatus. the combination of a receiver. a converti le air exhaust and coniprcssion pump con-- nccted with the said ['(I't-iVOI, a return pipe connected With the inlet of said receiver, means for supplying water to said receiver, a liquid pump having its inlet passage-connected. with the receiver, a delivery pipe leading from the discharge passage of? said liquid pump, means for actuating said air' and liquid pumps, an air pipe connected with said delivery pipe and connnunicatinc' with the receiver, and valves in said delivery and air pipes, whereby liquid may be sup plied through said delivery pipe at the same time that air is exhausted from the return pipe, or air under ln'cssure may be supplied through said do ivorypipe.

6. in a pneumatic cleansing apparatus, the combination ot' a receiver, an exhaust pump connected with the said receiver, a re turn pipe connected with the inlet or. said E from the water supply pipe, and apartial receiver, a liquid pump having its inlet passage connected with the receiver, a delivery pipe leading from the discharge passage of said liquid pump, means for actuating said air and liquid pumps, a pipe supplying compressed air from a separate source of supply connected with said delivery pipe, and valves in said delivery and air supply pipes, whereby either compressed air or liquid from the receiver may be delivered through said. delivery pipe, and a partial vacuum maintained in the said return pipe.

7. In a pneumatic cleansing apparatus, the combination of a receiver, an exhaust pump connected with said receiver, a return pipe connected With the inlet of the receiver, a liquid pump having its inlet passage connected with the receiver, a delivery pipe leading from the discharge passage of said liquid pump, means for actuating said air and liquid pumps, a Water supply pipeconnected with, said delivery pipe, and valvesin" said pipes, whereby liquid may lac-delivered to said delivery pipe from the receiver or vacuum may he maintained in said return pipe.

8. In a pneumatic cleansing apparatus,

the combination of a receiver, a convertible air-exhaust and. compression pump c0nnected with the said receiver, a return plpe connected with the'inlet of the receiver,- a a liquid pump having its inlet passage connected with the receiver, a delivery pipe'connected with the. outlet of said liquid pump,

an air, pipe connected with said delivery pipe and communicating with the receiver, a Water supply. pipe connected with said delivery pipe, an air supply pipereceiving compressed air from a separate source ofs'upply, connected vvith said delivery pipe, and valves in said pipes, whereby either liquid from the receiver or Water may be supplied to the delivery pipe, and a partial vacuum maintained in the returnpipe, or com-' pressed air'may be delivered through said delivery pipe. In testimony, that I claim the foregoing as my invention I aiiixi'nv signature in the presence of two witnesses this 21st day of November; A; 1). 191-1.

ALBERT MOORHEAD.

Witnesses:

GEO. R. WILKIN'S, T. H. Anranns. 

